Wind, water, or ice weathers, or breaks, sediment away from larger rock. The sediment is eroded and then deposited in a new location. As these processes are repeated sediment forms., Organisms (both plants and animals) perish and are covered by sediment, Sedimentary rock forms over time from the compaction and cementation of sediment layers., The combination of heat, pressure, and decomposition turns dead organisms into fossil fuels, such as coal, oil (petroleum), and natural gas.

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